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二化螟是浙江省水稻栽培上一种常发性、危害又较严重的害虫之一,在害虫测报工作中历来占有较重要的地位。近几年来,可能由于种植品种和食料条件等因子的变化,使二化螟发生期、发生量、发生代数及虫情苗情配合等方面起了一些变化,与1984年前比较,差异甚为显著。为了适应当前农业生产发展的需要,现将黄岩市病虫观测站历年的系统调查资料作一分析研究,并在防冶技术上提出相应的对策。现简述如下。一、二化螟发生为害规律的变动
Chilo suppressalis (Walker) is one of the most common and harmful pests in rice cultivation in Zhejiang Province. It occupies an important position in pest forecasting. In recent years, due to changes in planting varieties and food conditions and other factors, the occurrence of Chilo suppressalis occurred, the occurrence of algebra and the occurrence of insects and other conditions with some changes, compared with 1984 before, the difference is very Significant. In order to meet the needs of the current development of agricultural production, the pest and disease observation station in Huangyan City, the historical data of the survey system for an analysis of the past, and in the anti-smelting technology to put forward corresponding countermeasures. Are summarized below. First, the occurrence of Chilo suppressal changes in the law